# US 10,375,706 B2 · Device-to-device (D2D) data transmission method of user equipment in wireless communication system and user equipment using same method

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- Number: US 10,375,706 B2
- Document ID: US10375706B2
- Status: Granted
- Kind: B2
- Application number: 15/519,445
- Filed: 2015-10-16
- Published: 2017-08-24
- Granted: 2019-08-06
- Earliest claimed: 2014-10-16
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Sunghoon Jung; Youngdae Lee
- Web page: https://patentgrep.com/patent/US10375706B2

## CPC

- H04W 72/56: based on priority criteria
- H04W 28/02: Traffic management, e.g. flow control or congestion control
- H04W 72/569: {of the traffic information}
- H04W 8/005: {Discovery of network devices, e.g. terminals}
- H04W 36/142: {over the same radio air interface technology}
- H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Disclosed are a device-to-device (D2D) data transmission method of a user equipment (UE) in a wireless communication system and a UE using the method. The method comprises: receiving multiple resource pools and a resource pool configuration for configuring priority order information on each resource pool; and selecting a particular resource pool to transmit D2D data among the multiple resource pools on the basis of the priority order information on each resource pool, wherein the priority order information on each resource pool indicates the priority order of D2D data capable of using each of the multiple resource pools.

## Claims

### Claim 1

A method for transmitting device-to-device (D2D) data in a wireless communication system, the method performed by a user equipment (UE) and comprising:
receiving, from a network, information for a plurality of resource pools and class information for each of the plurality of resource pools; and
transmitting, to another UE, the D2D data on a specific resource pool related to a public safety class among the plurality of resource pools based on the class information, when the UE is a UE related to the public safety class,
wherein the class information is information related to whether the each of the plurality of resource pools is the public safety class or a non-public safety class.

### Claim 2 (depends on 1)

The method of claim 1, wherein, when the D2D data comprises a plurality of packets, at least two packets among the plurality of packets have different D2D data priorities.

### Claim 3 (depends on 1)

The method of claim 1, wherein when the UE is a UE related to the non-public safety class, the UE transmits the D2D data on a specific resource pool related to the non-public safety class among the plurality of resource pools based on the class information.

### Claim 4

A user equipment (UE), comprising:
a transceiver configured to transmit and receive a radio signal; and
a processor operatively connected to the transceiver, that:
controls the transceiver to receive, from a network, information for a plurality of resource pools and class information for each of the plurality of resource pools, and
controls the transceiver to transmit, to another UE, device-to-device (D2D) data on a specific resource pool related to a public safety class among the plurality of resource pools based on the class information, when the UE is a UE related to the public safety class,
wherein the class information is information related to whether the each of the plurality of resource pools is the public safety class or a non-public safety class.

### Claim 5 (depends on 4)

The UE of claim 4, wherein, when the D2D data comprises a plurality of packets, at least two packets among the plurality of packets have different D2D data priorities.

### Claim 6 (depends on 5)

The UE of claim 5, wherein when the UE is a UE related to the non-public safety class, the UE transmits the D2D data on a specific resource pool related to the non-public safety class among the plurality of resource pools based on the class information.